In general, JSON comes over the network, so MMAP won't really work unless you save to a file. But then you'll run out of disk space. I mean, you have a 1k, 2k,

In general, JSON comes over the network, so MMAP won't really work unless you save to a file. But then you'll run out of disk space. I mean, you have a 1k, 2k, 4k buffer. Why use more, because it's too much work?